java - 如何将 Java 打印到窗口

Question

我编写一些代码只是为了好玩并帮助我熟悉流程。我对 Java 编程非常陌生，所以请耐心等待。

目前，我只是在 Notepad++ 中编写并在命令提示符中进行编译，但我想了解如何编译并将输出打印到窗口，而不是将其打印到命令提示符中。

public class SalesCalculations {
    public static void main (String args[]){
    //This section is shirt sales calculations

    int shirtCost;
    shirtCost = 12;

    int shirtSales;
    shirtSales = 200;

    int shirtSalePrice;
    shirtSalePrice = 25;

    int shirtMakeCost;
    shirtMakeCost = shirtCost * shirtSales;

    int shirtSaleTotal;
    shirtSaleTotal = shirtSalePrice * shirtSales;

    int shirtProfit;
    shirtProfit = shirtSaleTotal - shirtMakeCost;

    System.out.println("");
    System.out.println("Cost to make Shirt:             " + "$" +  shirtCost);
    System.out.println("Sales Price of Shirt:           " + "$" +  shirtSalePrice);
    System.out.println("Number of Shirt sales:          " +  shirtSales);
    System.out.println("This months Shirt making price: " + "$" +  shirtMakeCost);
    System.out.println("Shirt sales money this month:   " + "$" +  shirtSaleTotal);
    System.out.println("Profit of Shirts:               " + "$" +  shirtProfit);
    System.out.println("");

    }
}

任何帮助或指导将不胜感激!

Answer 1

如果还不清楚，请使用 .java 创建文件进行编译，转到命令提示符并运行

javac filename.java

您创建一个具有 .class 扩展名的新文件，该文件将在没有扩展名的情况下使用命令执行

java filename

您可以使用JOptionPane类在对话框中打印结果，考虑到 "\n" 将导致换行，例如在其代码中为

JOptionPane.showMessageDialog(null,"Cost to make Shirt:           " + "$" +  shirtCost + "\n "
    + "Sales Price of Shirt:           " + "$" +  shirtSalePrice + " \n " 
    + "Number of Shirt sales:          " +  shirtSales + "\n" 
    + "This months Shirt making price: " + "$" +  shirtMakeCost + "\n"
    + "Shirt sales money this month:   " + "$" +  shirtSaleTotal + "\n" 
    + "Profit of Shirts:               " + "$" +  shirtProfit);

要工作必须导入类

import javax.swing.JOptionPane;

对于数据图形类，它提供了输入方法，例如

int x = Integer.parseInt(JOptionPane.showInputDialog(null, "Input Value "));

remember that this method returns a string so it is necessary to convert it to an integer